Wikipedia
Pianos in the Parks is a public-private partnership led by Laird Norton Wealth Management, Seattle Parks and Recreation, King County Parks and local arts and business organizations.
The program places artistically decorated pianos in parks and open spaces in Seattle, Bellevue and King County during the months of July and August.
These pianos have been well loved and heavily played for many years. Unfortunately, pianos don't get better with age and they are usually destined to end up in landfills and recycling centers. According to KEXP, these pianos are getting a new life thanks to "Classic Pianos, who have generously [donated them and] offered to tune and transport them, and students and instructors from Gage Academy of Art, who will give each instrument a makeover...[and] anyone is invited to 'tickle the ivories' of any piano they come across."